JP2011183760A - Alignment jig of stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alignment jig of a stapler, which positions a center position with a higher accuracy. <P>SOLUTION: The alignment jig of the stapler includes: a pair of clamping members 16 which can clamp both side part frames of a clincher unit 6 and a driver unit 4; and an operating means 17 which supports the clamping members 16 in mutually operable in opening and closing. On the clamping members 16, a first positioning protrusion 21 and a second positioning protrusion 22 which can be fitted into a first guide hole 11 formed on the side part frame 1a of the driver unit 4 and a second guide hole 15 formed on the side part frame 5a of the clincher unit 6 respectively, are formed. When the clamping members 16 clamp both side part frames 1a and 5a of the clincher unit 6 and the driver unit 4, each of the first and the second positioning protrusions 21 and 22 is to be fitted into each of the first and the second guide hole 11 and 15 of the clincher unit 6 and the driver unit 4 respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a centering jig for positioning and assembling a driver unit and a clincher unit of a stapler.

  In general, the saddle stitching stapler is arranged by separating a clincher that folds a leg of a staple that has been pierced and pierced through the stapled paper, and a clincher method that folds the leg of the staple, It can be roughly divided into a movable clincher method and a fixed clincher method. The movable clincher method is a method in which the movable clincher turns and bends its legs after the staple has completely penetrated the binding paper. The fixed clincher method is fixed immediately after the staple legs penetrate the binding paper. The clincher grooves are guided in order and bent. In the movable clincher method, the leg portions of the staples bent along the back surface of the binding sheet are configured to be bypass clinches arranged on the back surface without overlapping each other.

  In the case of a bypass clinching, the thickness of the clincher needs to be substantially the same as the thickness of the staples in order to prevent problems such as needle rolls. For this reason, the precision of the core position in these thickness directions (front-back direction) is calculated | required.

  As one of means for solving such a demand, it is conceivable to widen the core allowable range. As disclosed in Patent Document 1, the core tolerance range is increased by making it easy to pick up the tip of the staple that has been driven out by the driver even if the member to which the driver and the movable clincher are attached is slightly displaced forward and backward. As described above, a mechanism for floating the movable clincher in the front-rear direction is known (see Patent Document 1).

  However, it is desirable to use the core tolerance range of this floating mechanism to cover the movement accuracy of the stapler. To that end, it is necessary to accurately match the core positions of the driver unit and the clincher unit. It becomes.

  Therefore, as shown in Patent Document 2, a positioning member is sandwiched between the driver unit and the clincher unit, and a concave portion and a protrusion are provided in the positioning member and the driver unit so as to position the core position. A technique is known (see Patent Document 2).

Japanese Patent No. 4232371 Japanese Patent No. 4330375

  However, the technique of Patent Document 2 requires a mechanism for holding the positioning member between the driver side and the clincher side, and only one of them has a positioning position, so that the position adjustment on the driver side and the clincher side is possible. Is required. In addition, the accuracy may decrease due to rattling during operation of the clamping mechanism.

  Further, in order to hold the positioning portion on the stapler side and the positioning member side while being aligned, the positioning member is fitted into the clamping member, and the positioning is performed. Since a gap for smooth operation is provided between them, there is a problem that the positioning accuracy is lowered due to the play in the gap.

  It is an object of the present invention to provide a stapler centering jig for solving the above-described problems and positioning the core position with higher accuracy.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a drive unit including a magazine storing a large number of staples and a driver for driving staples supplied from the magazine toward the binding paper, and is driven after the clamping operation. A stapler centering jig for aligning a clincher unit having a clincher for bending a leg portion of a staple that has passed through a binding sheet and assembling it to a support means, the clincher unit and a driver A pair of sandwiching members capable of sandwiching both side frames of the unit and operating means for supporting the sandwiching members so that they can be opened and closed with each other; the sandwiching member is formed on a side frame of the driver unit; The first guide hole and the second guide hole formed in the side frame of the clincher unit When the first positioning convex portion and the second positioning convex portion that can be fitted to each other are formed, and the both side frames of the clincher unit and the driver unit are sandwiched by the sandwiching member, The second positioning protrusions are fitted into the first and second guide holes of the driver unit and the clincher unit, respectively.

  According to a second aspect of the present invention, in the first aspect, the clincher is provided as a movable clincher, the first guide hole formed in the side frame of the driver unit is a guide hole of the driver, and the clincher unit The second guide hole formed in the side frame is a guide hole of the movable clincher.

  According to a third aspect of the present invention, in the first or second aspect, the first positioning convex portion and the second positioning convex portion are disposed on the sandwiching member, and the first guide hole and the second guide hole are disposed on the driver. Instead of forming on the side frames of the unit and the clincher unit, the first positioning convex portion and the second positioning convex portion are formed on the side frames of the driver unit and the clincher unit, and the first and second The guide hole is formed in the sandwiching member.

  According to the first aspect of the present invention, the pair of sandwiching members includes the first guide hole formed in the side frame of the driver unit and the second guide hole formed in the side frame of the clincher unit. The first positioning convex portion and the second positioning convex portion that can be fitted to each other are formed, and when the both side frames of the clincher unit and the driver unit are sandwiched by the sandwiching member, the first and second positioning convex portions are formed. Since the first and second guide holes of the driver unit and the clincher unit are fitted to the positioning protrusions, respectively, the driver unit and the clincher unit are aligned by the centering jig, for example. When assembling to one support means, the driver unit is fixed to one support means. Thereafter, the clincher unit is temporarily aligned with the other support means, and the first positioning convex portion of the sandwiching member is positioned in the driver unit so as to sandwich the side frame of the clincher unit inside the sandwiching member of the centering jig. The second positioning projection is fitted into the second guide hole of the side frame of the clincher unit. As a result, the relative positional relationship between the driver unit and the clincher unit is determined, and thus the clincher unit may be further fixed to the support means. The driver unit may be positioned and fixed with a centering jig after the clincher unit is fixed first. In this way, the core positions of the driver and the clincher can be accurately and easily positioned.

  According to the invention of claim 2, the clincher is provided as a movable clincher, the first guide hole formed in the side frame of the driver unit is a guide hole of the driver, and the side portion of the clincher unit Since the second guide hole formed in the frame is the guide hole of the movable clincher, it is not necessary to form a special guide hole on the stapler side.

  According to the invention of claim 3, the same effect as in claims 1 and 2 can be obtained.

The perspective view of the principal part and centering jig of the stapler for saddle stitching concerning this invention Perspective view of the state where the driver unit and the clincher unit are aligned using the alignment tool (A) is the perspective view which looked at the stapler for saddle stitching from the upper side, (b) is the top view which looked at the said stapler from the top (A) is the perspective view which looked at the above-mentioned stapler from the lower side, (b) is the bottom view The perspective view which abbreviate | omits one part and shows the positional relationship of a driver and a movable clincher

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a main part of a saddle stitching stapler. This saddle stitching stapler is a paper post-processing device, and is a known device such as an electrophotographic image forming process device or an ink jet print head device. The sheet is attached to the side portion of the image forming apparatus having the image forming function, and the sheet discharged from the image forming apparatus is saddle stitched.

  The saddle stitching stapler includes a staple storing magazine 2 on an upper guide frame 1, a driver 3 for driving staples supplied from the magazine 2 toward binding paper, a driver unit 4 having a driver driving mechanism, and the like, and a lower guide frame 5. The clincher unit 6 having a movable clincher 13 and a driving mechanism 33 (see FIG. 5) for folding the staples struck in the upper and lower parts are arranged separately in the vertical direction, and the driver unit 4 is an upper support that is an upper support means. The clincher unit 6 is supported on the base B1 by a lower support base B2 which is a lower support means. The upper support base B1 and the lower support base B2 are slidably attached to an upper guide shaft 7 and a lower guide shaft 8 that are arranged in parallel to each other. The upper support base B1 and the lower support base B2 are fixed to the upper timing belt 19a and the lower timing belt 19b, respectively, and the end portions of the upper timing belt 19a and the lower timing belt 19b are hooked on a roller 32 provided on the common shaft 31. It has been turned. Accordingly, the upper support base B1 and the lower support base B2, and the driver unit 4 and the clincher unit 6 are simultaneously moved in the same direction by the same amount.

  In the above configuration, when a binding sheet (not shown) is inserted between the driver unit 4 and the clincher unit 6 and the driver driving mechanism is operated, the magazine 2 of the driver unit 4 is lowered to remove the binding sheet of the clincher unit 6. The staple is clamped between the binding bases 9 and the staples are driven into the binding paper by the driver 3, and the tips of the leg portions on both sides of the staple passing through the binding paper hit the corresponding movable clincher as will be described later, and the clincher driving mechanism 33. As a result, the movable clincher 13 (see FIG. 5) swings, so that both leg portions are bent so as to contact the back surface of the binding sheet, and the binding operation is completed.

  By the way, the clincher unit 6 and the driver unit 4 arranged above and below are centered by the centering jig A and fixed to the upper support base B1 and the lower support base B2.

  First, the driver unit 4 includes a drive mechanism for clamping the magazine 2, a drive mechanism for driving the driver 3, an electric motor, and the like. As shown in FIGS. 1 and 5, the driver 3 is supported by a guide pin 10, and the guide pin 10 extends along a first guide hole 11 that is formed in the side frame 1 a of the upper guide frame 1 so as to be long in the vertical direction. Are slidably engaged.

  On the other hand, the clincher unit 6 has a pair of left and right movable clinchers 13 and a driving mechanism 33 disposed below the through holes 12 provided in the binding table 9, and the leg portions of the staples driven out by the driver unit 4 are arranged. After penetrating from the through hole 12, the clincher driving mechanism 33 is bent by engaging the leg portion by swinging the movable clincher 13 upward, and the movable clincher 13 is mounted so as to swing vertically. It has been. This swinging occurs when the guide pin 14 provided below the movable clincher 13 is slid in the vertical direction along the second guide hole 15 formed in the side frame 5a of the lower guide frame 5 so as to be long in the vertical direction. The operation member 34 is swung vertically, and the end of the movable clincher 13 is pushed up and pushed down by the operation member 34.

  Accordingly, the first guide hole 11 of the driver unit 4 is a reference for movement of the driver 3, and the second guide hole 15 of the clincher unit 6 is a reference for movement of the movable clincher 13.

  The centering jig A includes a pair of sandwiching members 16 capable of sandwiching both side frames 1a and 5a of the driver unit 4 and the clincher unit 6 and a pair of supports which support the sandwiching members 16 so as to be able to approach and separate from each other. And a lever (operation means) 17.

  The sandwiching member 16 is a rod-shaped member having a square cross section. The pair of levers 17 are coupled to each other via a support shaft 18 at an intermediate portion, and are coupled to the pinching member 16 via a shaft 20 on the distal end side. Further, the shaft body 28 protrudes from one side to the other pinching member 16, and one end of a spring 30 attached to the end of the shaft body 28 is engaged with the other pinching member 16. As a result, the gripping side of the lever 17 is urged so as to be constantly opened. When the lever 17 is gripped and operated to close against the spring force, the distal ends of the lever 17 are separated from each other, so Open and operate away. On the other hand, when the gripping force on the lever 17 is released, the distal ends of the lever 17 approach each other by the spring force, so that the pinching members 16 are also closed so as to approach each other.

  Next, a first positioning convex portion 21 and a second positioning convex portion 22 are formed on the upper and lower portions of the facing surface of the sandwiching member 16, respectively. The first positioning convex portion 21 is formed to be long in the vertical direction, and the second positioning convex portion 22 is composed of an upper convex portion 22a and a lower convex portion 22b. The central axes of the first positioning convex portion 21 and the second positioning convex portion 22 are set to coincide. The first positioning convex portion 21 is formed in a size that fits into the first guide hole 11 of the side frame 1 a of the driver unit 4, and the second positioning convex portion 22 is formed on the side frame 5 a of the clincher unit 6. It is formed in a size that fits into the second guide hole 15.

  Next, when the driver unit 4 and the clincher unit 6 are aligned by the alignment jig A having the above-described configuration and assembled to the upper support base B1 and the lower support base B2, first, as shown in FIGS. As shown, using the positioning round hole 23 and the long hole 24 of the mounting plate 35 provided in the driver unit 4, align with a screw hole (not shown) formed in the upper support base B1, The screw 29 inserted through the screw hole is screwed into the driver side fixing screw hole 25, and the driver unit 4 is fixed to the upper support base B1.

  Thereafter, the clincher unit 6 is temporarily aligned with the lower support base B2 using the positioning long holes 26 (see FIG. 4A) of the bottom plate 36. Further, using the centering jig A, the clincher unit 6 is positioned with reference to the driver unit 4 side. That is, as shown in FIGS. 1 and 2, after the lever 17 of the centering jig A is gripped and opened so that the interval between the pinching members 16 is widened, the driver unit is placed inside the pinching member 16. 4 and the side frames 1a and 5a of the clincher unit 6 are sandwiched between the first positioning projections 21 of the sandwiching member 16 in the first guide holes 11 of the side frame of the driver unit 4, and the second The positioning convex portion 22 is fitted into the second guide hole 15 of the side frame 5 a of the clincher unit 6. As a result, the relative positional relationship between the driver unit 4 and the clincher unit 6 is determined. Therefore, as shown in FIGS. 4A and 4B, the screw 37 inserted from the lower support base B2 is fixed to the bottom plate 36 of the clincher unit 6. What is necessary is just to screw in the hole 27 and to fix the clincher unit 6 to lower support stand B2.

  As described above, the first positioning convex portion 21 of the sandwiching member 16 sandwiches the side frames 1a and 5a of the driver unit 4 and the clincher unit 6 inside the sandwiching member 16, and the first positioning projection 21 of the side frame 1a of the driver unit 4 The first positioning projection 21 and the second positioning projection 22 are fitted into the second guide hole 15 of the side frame 5 a of the clincher unit 6. Since the center axes of the positioning projections 22 coincide with each other, the first guide holes 11 of the side frame 1a of the driver unit 4 and the second guide holes 15 of the side frame 5a of the clincher unit 6 also coincide with each other. Are positioned as follows. Therefore, the core positions of the driver 3 and the clincher are easily and reliably positioned and fixed.

  Alternatively, after the clincher unit 6 is first fixed to the lower support base B2, the position of the driver unit 4 may be determined by the alignment jig A and fixed to the upper support base B1.

  Further, the first and second positioning projections may be formed in the side frames of the driver unit and the clincher unit, and the first and second guide holes (or grooves) may be formed in the sandwiching member. In this case, the first positioning convex portion of the driver unit serves as a reference for the movement of the driver, and the second positioning convex portion of the clincher unit serves as a reference for the movement of the movable clincher. Further, the first and second guide holes are formed separately from the driver and the guide holes of the movable clincher.

  Furthermore, in the above-described embodiment, the saddle stitching stapler in which the support means is configured by two upper and lower support bases has been described, but the present invention is not limited to this. For example, a configuration in which the driver unit and the clincher unit are aligned and fixed to the upper and lower portions of one integrally formed supporting means may be employed. In the above-described embodiment, the description has been made based on the form using the movable clincher in the clincher unit, but it will be described in detail that the present invention can be applied to a form using a fixed clincher instead of the movable clincher. Not too long.

A Alignment jig B Device body 2 Magazine 3 Driver 4 Driver unit 1a, 5a Side frame 6 Clincher unit 11 First guide hole 13 Movable clincher 15 Second guide hole 16 Holding member 17 Lever (operating means)
21 1st positioning convex part 22 2nd positioning convex part

Claims (3)

A driver unit having a magazine storing a large number of staples and a driver for driving staples supplied from the magazine toward the binding paper, and a clincher for bending the leg portions of the staples which are punched after the clamping operation and penetrate the binding paper. A stapler centering jig that separates the clincher unit from above and below and assembles it to the support means,
A pair of sandwiching members capable of sandwiching both side frames of the clincher unit and the driver unit, and operating means for supporting these sandwiching members so that they can be opened and closed,
The sandwiching member includes a first positioning protrusion that can be fitted into a first guide hole formed in the side frame of the driver unit and a second guide hole formed in the side frame of the clincher unit. And the second positioning convex portion, and when the clincher unit and both side frames of the driver unit are sandwiched by the clamping member, the first and second positioning convex portions are connected to the driver unit. A stapler centering jig characterized by being fitted into the first and second guide holes of the clincher unit.   The clincher is provided as a movable clincher, the first guide hole formed in the side frame of the driver unit is the guide hole of the driver, and the second guide hole formed in the side frame of the clincher unit The stapler centering jig according to claim 1, wherein the guide hole is a guide hole of the movable clincher.   Instead of forming the first positioning projection and the second positioning projection in the sandwiching member, and forming the first guide hole and the second guide hole in the side frame of the driver unit and the clincher unit, The first positioning convex portion and the second positioning convex portion are formed in side frames of the driver unit and the clincher unit, and the first and second guide holes are formed in the sandwiching member. A stapler centering jig according to claim 1 or 2.

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